Exactly. .17 Hornady Magnum Rimfire is also a very fun, inexpensive round. A little bit more power than the .22LR, and better accuracy over distance. I bought a Savage bolt action in .17HMR for about $150. Bull barrel, accutrigger, scope mounts, walnut stock. Put a cheap BSA scope on it. A load of fun. Cans of Shasta Orange Soda beware!
[Also, at some in the near future, I would like to begin building an FAL or M14. Buy a stripped receiver, build it, literally, piece by piece. Probably an FAL, as M14 parts are unreasonably expensive. I wanted to build an AR15, but CA has stupid "assault gun" laws. I'll run into the same problems with the FAL, but they're easier to address. I already have a Mini14 which is 5.56mm anyway, but doesn't get me hassled at the range like an AR would.]